(57) The invention relates to a road safety barrier which comprises at least two posts
(5) fixed to the substrate and at least one guide bar, directed in the direction of
the road, wherein at least one collision energy absorbing device is fastened by means
of the connection means between the post (5) and the guide. The collision energy absorbing
device comprises at least one spatial energy absorbing element (1) having a front
edge (2), onto which a collision force acts, and, opposite to it, the rear edge (3),
by means of which it is constrained in the road safety barrier structure. The energy
absorbing element (1) has a surface with shaped folds, transverse to the direction
defined between the front edge (2) and the rear edge (3), wherein the shape and distribution
of these folds is such that under the influence of the collision force received by
the front edge (2) of the element (1) the consecutive folds are crushed.
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